On startup Airport shows connection to my wireless router but after starting to download a web site or e-mail the connection drops off even though it shows that it is connected on the Network page. Checking the popup in the upper right hand corner shows Airport searching for a connection and then dropping off continually. At other times the Network page shows 'no network selected' and my wireless system is not listed in the drop down menu; I can select it on the page under Advanced and bring it to the menu but when it is selected it doesn't stay in the window. The Apply button does not light up. I have two pc's in the same room, a laptop and a desktop that connect to the system with no problem. Do I have a software or a hardware problem?